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Employee Stock Purchase Plan, Minimum Percentage of Common Stock Fair Value Defined to Purchase Shares by Eligible Participants

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Employee Stock Purchase Plan, Number of Exercise Periods

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Employee Stock Purchase Plan, Term of Exercise Period

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Employee Stock Purchase Plan, Term of Offering Period

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Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility, Market Capitalization

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost capitalized for award under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Equity Compensation - Narrative (Details) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2024 USD ($)	Jul. 31, 2023 USD ($)	Jul. 31, 2024 USD ($) period shares	Jul. 31, 2023 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market capitalization			$ 2,000
Share-based compensation expense	$ 170	$ 197	$ 319	$ 362
Expected dividends			0.00%
1998 Employee Qualified Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of compensation that eligible employees can use to purchase common stock, maximum			15.00%
Percentage of fair market value eligible employees can purchase common stock, minimum			85.00%
Number of exercise period \| period			4
Term of exercise period			6 months
Term of offering period			24 months
Restricted Stock Units (RSUs) and Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vested in period, fair value			$ 514	373
Awards granted in period (in shares) \| shares			2,813
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted in period (in shares) \| shares			3,000
Share based compensation expense	153	164	$ 280	294
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted in period (in shares) \| shares			279
Share based compensation expense	8	10	$ 14	$ 21
Award vesting period			3 years
Expected dividends			0.00%	0.00%
Performance Stock Units \| Share-based Compensation Award, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting percentage (in percentage)			33.33%
Performance Stock Units \| Share-based Compensation Award, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting percentage (in percentage)			33.33%
Performance Stock Units \| Share-based Compensation Award, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting percentage (in percentage)			33.33%
Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 3	$ 4	$ 4	$ 10